!';
+ }
+ return false;
+}}
+
+// Store a config value ($value) in the category ($family)
+// under the key ($key)
+// Return the value, or false if the database update failed
+
+if(! function_exists('set_config')) {
+function set_config($family,$key,$value) {
+
+ global $a;
+ $a->config[$family][$key] = $value;
+
+ if(get_config($family,$key,true) === false) {
+ $ret = q("INSERT INTO `config` ( `cat`, `k`, `v` ) VALUES ( '%s', '%s', '%s' ) ",
+ dbesc($family),
+ dbesc($key),
+ dbesc($value)
+ );
+ if($ret)
+ return $value;
+ return $ret;
+ }
+ $ret = q("UPDATE `config` SET `v` = '%s' WHERE `cat` = '%s' AND `k` = '%s' LIMIT 1",
+ dbesc($value),
+ dbesc($family),
+ dbesc($key)
+ );
+ if($ret)
+ return $value;
+ return $ret;
+}}
+
+// convert an XML document to a normalised, case-corrected array
+// used by webfinger
+
+if(! function_exists('convert_xml_element_to_array')) {
+function convert_xml_element_to_array($xml_element, &$recursion_depth=0) {
+
+ // If we're getting too deep, bail out
+ if ($recursion_depth > 512) {
+ return(null);
+ }
+
+ if (!is_string($xml_element) &&
+ !is_array($xml_element) &&
+ (get_class($xml_element) == 'SimpleXMLElement')) {
+ $xml_element_copy = $xml_element;
+ $xml_element = get_object_vars($xml_element);
+ }
+
+ if (is_array($xml_element)) {
+ $result_array = array();
+ if (count($xml_element) <= 0) {
+ return (trim(strval($xml_element_copy)));
+ }
+
+ foreach($xml_element as $key=>$value) {
+
+ $recursion_depth++;
+ $result_array[strtolower($key)] =
+ convert_xml_element_to_array($value, $recursion_depth);
+ $recursion_depth--;
+ }
+ if ($recursion_depth == 0) {
+ $temp_array = $result_array;
+ $result_array = array(
+ strtolower($xml_element_copy->getName()) => $temp_array,
+ );
+ }
+
+ return ($result_array);
+
+ } else {
+ return (trim(strval($xml_element)));
+ }
+}}
+
+// Given an email style address, perform webfinger lookup and
+// return the resulting DFRN profile URL, or if no DFRN profile URL
+// is located, returns an OStatus subscription template (prefixed
+// with the string 'stat:' to identify it as on OStatus template).
+// If this isn't an email style address just return $s.
+// Return an empty string if email-style addresses but webfinger fails,
+// or if the resultant personal XRD doesn't contain a supported
+// subscription/friend-request attribute.
+
+if(! function_exists('webfinger_dfrn')) {
+function webfinger_dfrn($s) {
+ if(! strstr($s,'@')) {
+ return $s;
+ }
+ $links = webfinger($s);
+ logger('webfinger_dfrn: ' . $s . ':' . print_r($links,true), LOGGER_DATA);
+ if(count($links)) {
+ foreach($links as $link)
+ if($link['@attributes']['rel'] === NAMESPACE_DFRN)
+ return $link['@attributes']['href'];
+ foreach($links as $link)
+ if($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB)
+ return 'stat:' . $link['@attributes']['template'];
+ }
+ return '';
+}}
+
+// Given an email style address, perform webfinger lookup and
+// return the array of link attributes from the personal XRD file.
+// On error/failure return an empty array.
+
+
+if(! function_exists('webfinger')) {
+function webfinger($s) {
+ $host = '';
+ if(strstr($s,'@')) {
+ $host = substr($s,strpos($s,'@') + 1);
+ }
+ if(strlen($host)) {
+ $tpl = fetch_lrdd_template($host);
+ logger('webfinger: lrdd template: ' . $tpl);
+ if(strlen($tpl)) {
+ $pxrd = str_replace('{uri}', urlencode('acct:'.$s), $tpl);
+ $links = fetch_xrd_links($pxrd);
+ if(! count($links)) {
+ // try with double slashes
+ $pxrd = str_replace('{uri}', urlencode('acct://'.$s), $tpl);
+ $links = fetch_xrd_links($pxrd);
+ }
+ return $links;
+ }
+ }
+ return array();
+}}
+
+if(! function_exists('lrdd')) {
+function lrdd($uri) {
+
+ $a = get_app();
+
+ if(strstr($uri,'@')) {
+ return(webfinger($uri));
+ }
+ else {
+ $html = fetch_url($uri);
+ $headers = $a->get_curl_headers();
+ $lines = explode("\n",$headers);
+ if(count($lines)) {
+ foreach($lines as $line) {
+ // TODO alter the following regex to support multiple relations (space separated)
+ if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
+ $link = $matches[1];
+ break;
+ }
+ }
+ }
+ if(! isset($link)) {
+ // parse the page of the supplied URL looking for rel links
+
+ require_once('library/HTML5/Parser.php');
+ $dom = HTML5_Parser::parse($html);
+
+ if($dom) {
+ $items = $dom->getElementsByTagName('link');
+
+ foreach($items as $item) {
+ $x = $item->getAttribute('rel');
+ if($x == "lrdd") {
+ $link = $item->getAttribute('href');
+ break;
+ }
+ }
+ }
+ }
+
+ if(isset($link))
+ return(fetch_xrd_links($link));
+ }
+ return array();
+}}
+
+
+
+// Given a host name, locate the LRDD template from that
+// host. Returns the LRDD template or an empty string on
+// error/failure.
+
+if(! function_exists('fetch_lrdd_template')) {
+function fetch_lrdd_template($host) {
+ $tpl = '';
+ $url = 'http://' . $host . '/.well-known/host-meta' ;
+ $links = fetch_xrd_links($url);
+ if(count($links)) {
+ foreach($links as $link)
+ if($link['@attributes']['rel'] && $link['@attributes']['rel'] === 'lrdd')
+ $tpl = $link['@attributes']['template'];
+ }
+ if(! strpos($tpl,'{uri}'))
+ $tpl = '';
+ return $tpl;
+}}
+
+// Given a URL, retrieve the page as an XRD document.
+// Return an array of links.
+// on error/failure return empty array.
+
+if(! function_exists('fetch_xrd_links')) {
+function fetch_xrd_links($url) {
+
+
+ $xml = fetch_url($url);
+ if (! $xml)
+ return array();
+
+ logger('fetch_xrd_links: ' . $xml, LOGGER_DATA);
+ $h = simplexml_load_string($xml);
+ $arr = convert_xml_element_to_array($h);
+
+ if(isset($arr['xrd']['link'])) {
+ $link = $arr['xrd']['link'];
+ if(! isset($link[0]))
+ $links = array($link);
+ else
+ $links = $link;
+ return $links;
+ }
+ return array();
+}}
+
+// Convert an ACL array to a storable string
+
+if(! function_exists('perms2str')) {
+function perms2str($p) {
+ $ret = '';
+ $tmp = $p;
+ if(is_array($tmp)) {
+ array_walk($tmp,'sanitise_acl');
+ $ret = implode('',$tmp);
+ }
+ return $ret;
+}}
+
+// generate a guaranteed unique (for this domain) item ID for ATOM
+// safe from birthday paradox
+
+if(! function_exists('item_new_uri')) {
+function item_new_uri($hostname,$uid) {
+
+ do {
+ $dups = false;
+ $hash = random_string();
+
+ $uri = "urn:X-dfrn:" . $hostname . ':' . $uid . ':' . $hash;
+
+ $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' LIMIT 1",
+ dbesc($uri));
+ if(count($r))
+ $dups = true;
+ } while($dups == true);
+ return $uri;
+}}
+
+// Generate a guaranteed unique photo ID.
+// safe from birthday paradox
+
+if(! function_exists('photo_new_resource')) {
+function photo_new_resource() {
+
+ do {
+ $found = false;
+ $resource = hash('md5',uniqid(mt_rand(),true));
+ $r = q("SELECT `id` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
+ dbesc($resource)
+ );
+ if(count($r))
+ $found = true;
+ } while($found == true);
+ return $resource;
+}}
+
+
+// Take a URL from the wild, prepend http:// if necessary
+// and check DNS to see if it's real
+// return true if it's OK, false if something is wrong with it
+
+if(! function_exists('validate_url')) {
+function validate_url(&$url) {
+ if(substr($url,0,4) != 'http')
+ $url = 'http://' . $url;
+ $h = parse_url($url);
+
+ if(($h) && (checkdnsrr($h['host'], 'ANY'))) {
+ return true;
+ }
+ return false;
+}}
+
+// checks that email is an actual resolvable internet address
+
+if(! function_exists('validate_email')) {
+function validate_email($addr) {
+
+ if(! strpos($addr,'@'))
+ return false;
+ $h = substr($addr,strpos($addr,'@') + 1);
+
+ if(($h) && (checkdnsrr($h, 'ANY'))) {
+ return true;
+ }
+ return false;
+}}
+
+// Check $url against our list of allowed sites,
+// wildcards allowed. If allowed_sites is unset return true;
+// If url is allowed, return true.
+// otherwise, return false
+
+if(! function_exists('allowed_url')) {
+function allowed_url($url) {
+
+ $h = parse_url($url);
+
+ if(! $h) {
+ return false;
+ }
+
+ $str_allowed = get_config('system','allowed_sites');
+ if(! $str_allowed)
+ return true;
+
+ $found = false;
+
+ $host = strtolower($h['host']);
+
+ // always allow our own site
+
+ if($host == strtolower($_SERVER['SERVER_NAME']))
+ return true;
+
+ $fnmatch = function_exists('fnmatch');
+ $allowed = explode(',',$str_allowed);
+
+ if(count($allowed)) {
+ foreach($allowed as $a) {
+ $pat = strtolower(trim($a));
+ if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
+ $found = true;
+ break;
+ }
+ }
+ }
+ return $found;
+}}
+
+// check if email address is allowed to register here.
+// Compare against our list (wildcards allowed).
+// Returns false if not allowed, true if allowed or if
+// allowed list is not configured.
+
+if(! function_exists('allowed_email')) {
+function allowed_email($email) {
+
+
+ $domain = strtolower(substr($email,strpos($email,'@') + 1));
+ if(! $domain)
+ return false;
+
+ $str_allowed = get_config('system','allowed_email');
+ if(! $str_allowed)
+ return true;
+
+ $found = false;
+
+ $fnmatch = function_exists('fnmatch');
+ $allowed = explode(',',$str_allowed);
+
+ if(count($allowed)) {
+ foreach($allowed as $a) {
+ $pat = strtolower(trim($a));
+ if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
+ $found = true;
+ break;
+ }
+ }
+ }
+ return $found;
+}}
+
+// Format the like/dislike text for a profile item
+// $cnt = number of people who like/dislike the item
+// $arr = array of pre-linked names of likers/dislikers
+// $type = one of 'like, 'dislike'
+// $id = item id
+// returns formatted text
+
+if(! function_exists('format_like')) {
+function format_like($cnt,$arr,$type,$id) {
+ $o = '';
+ if($cnt == 1)
+ $o .= $arr[0] . (($type === 'like') ? t(' likes this.') : t(' doesn\'t like this.')) . EOL ;
+ else {
+ $o .= ''
+ . $cnt . ' ' . t('people') . ' ' . (($type === 'like') ? t('like this.') : t('don\'t like this.')) . EOL ;
+ $total = count($arr);
+ if($total >= MAX_LIKERS)
+ $arr = array_slice($arr, 0, MAX_LIKERS - 1);
+ if($total < MAX_LIKERS)
+ $arr[count($arr)-1] = t('and') . ' ' . $arr[count($arr)-1];
+ $str = implode(', ', $arr);
+ if($total >= MAX_LIKERS)
+ $str .= t(', and ') . $total - MAX_LIKERS . t(' other people');
+ $str .= (($type === 'like') ? t(' like this.') : t(' don\'t like this.'));
+ $o .= "\t" . '' . $str . '
';
+ }
+ return $o;
+}}
+
+
+// wrapper to load a view template, checking for alternate
+// languages before falling back to the default
+
+if(! function_exists('load_view_file')) {
+function load_view_file($s) {
+ $b = basename($s);
+ $d = dirname($s);
+ $lang = get_config('system','language');
+ if($lang === false)
+ $lang = 'en';
+ if(file_exists("$d/$lang/$b"))
+ return file_get_contents("$d/$lang/$b");
+ return file_get_contents($s);
+}}
+
+// for html,xml parsing - let's say you've got
+// an attribute foobar="class1 class2 class3"
+// and you want to find out if it contains 'class3'.
+// you can't use a normal sub string search because you
+// might match 'notclass3' and a regex to do the job is
+// possible but a bit complicated.
+// pass the attribute string as $attr and the attribute you
+// are looking for as $s - returns true if found, otherwise false
+
+if(! function_exists('attribute_contains')) {
+function attribute_contains($attr,$s) {
+ $a = explode(' ', $attr);
+ if(count($a) && in_array($s,$a))
+ return true;
+ return false;
+}}
+
+if(! function_exists('logger')) {
+function logger($msg,$level = 0) {
+
+ $debugging = get_config('system','debugging');
+ $loglevel = intval(get_config('system','loglevel'));
+ $logfile = get_config('system','logfile');
+
+ if((! $debugging) || (! $logfile) || ($level > $loglevel))
+ return;
+
+ @file_put_contents($logfile, datetime_convert() . ':' . session_id() . ' ' . $msg . "\n", FILE_APPEND);
+ return;
+}}
+
+
+if(! function_exists('activity_match')) {
+function activity_match($haystack,$needle) {
+ if(($haystack === $needle) || ((basename($needle) === $haystack) && strstr($needle,NAMESPACE_ACTIVITY_SCHEMA)))
+ return true;
+ return false;
+}}
+
+
+// Pull out all #hashtags and @person tags from $s;
+// We also get @person@domain.com - which would make
+// the regex quite complicated as tags can also
+// end a sentence. So we'll run through our results
+// and strip the period from any tags which end with one.
+// Returns array of tags found, or empty array.
+
+
+if(! function_exists('get_tags')) {
+function get_tags($s) {
+ $ret = array();
+ if(preg_match_all('/([@#][^ ,:?]*)([ ,:?]|$)/',$s,$match)) {
+ foreach($match[1] as $match) {
+ if(substr($match,-1,1) === '.')
+ $ret[] = substr($match,0,-1);
+ else
+ $ret[] = $match;
+ }
+ }
+
+ return $ret;
+}}
+
+
+// quick and dirty quoted_printable encoding
+
+if(! function_exists('qp')) {
+function qp($s) {
+return str_replace ("%","=",rawurlencode($s));
+}}
+
+
+if(! function_exists('like_puller')) {
+function like_puller($a,$item,&$arr,$mode) {
+
+ $url = '';
+ $sparkle = '';
+ $verb = (($mode === 'like') ? ACTIVITY_LIKE : ACTIVITY_DISLIKE);
+
+ if((activity_match($item['verb'],$verb)) && ($item['id'] != $item['parent'])) {
+ $url = $item['author-link'];
+ if(($item['network'] === 'dfrn') && (! $item['self']) && ($item['author-link'] == $item['url'])) {
+ $url = $a->get_baseurl() . '/redir/' . $item['contact-id'];
+ $sparkle = ' class="sparkle" ';
+ }
+ if(! ((isset($arr[$item['parent'] . '-l'])) && (is_array($arr[$item['parent'] . '-l']))))
+ $arr[$item['parent'] . '-l'] = array();
+ if(! isset($arr[$item['parent']]))
+ $arr[$item['parent']] = 1;
+ else
+ $arr[$item['parent']] ++;
+ $arr[$item['parent'] . '-l'][] = '' . $item['author-name'] . '';
+ }
+ return;
+}}
+
+if(! function_exists('get_mentions')) {
+function get_mentions($item) {
+ $o = '';
+ if(! strlen($item['tag']))
+ return $o;
+
+ $arr = explode(',',$item['tag']);
+ foreach($arr as $x) {
+ $matches = null;
+ if(preg_match('/@\[url=([^\]]*)\]/',$x,$matches))
+ $o .= "\t\t" . '' . "\r\n";
+ }
+ return $o;
+}}
+
+if(! function_exists('contact_block')) {
+function contact_block() {
+ $o = '';
+ $a = get_app();
+ if((! is_array($a->profile)) || ($a->profile['hide-friends']))
+ return $o;
+ $r = q("SELECT COUNT(*) AS `total` FROM `contact` WHERE `uid` = %d AND `self` = 0 AND `blocked` = 0 and `pending` = 0",
+ intval($a->profile['uid'])
+ );
+ if(count($r)) {
+ $total = intval($r[0]['total']);
+ }
+ if(! $total) {
+ $o .= '';
+ return $o;
+ }
+ $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 0 AND `blocked` = 0 and `pending` = 0 ORDER BY RAND() LIMIT 24",
+ intval($a->profile['uid'])
+ );
+ if(count($r)) {
+ $o .= '';
+ $o .= '';
+
+ }
+ return $o;
+
+}}
+
+if(! function_exists('search')) {
+function search($s) {
+ $a = get_app();
+ $o = '';
+ $o .= '
';
+ return $o;
+}}
+
+if(! function_exists('valid_email')) {
+function valid_email($x){
+ if(preg_match('/^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+$/',$x))
+ return true;
+ return false;
+}}
+
+
+if(! function_exists('gravatar_img')) {
+function gravatar_img($email) {
+ $size = 175;
+ $opt = 'identicon'; // psuedo-random geometric pattern if not found
+ $rating = 'pg';
+ $hash = md5(trim(strtolower($email)));
+
+ $url = 'http://www.gravatar.com/avatar/' . $hash . '.jpg'
+ . '?s=' . $size . '&d=' . $opt . '&r=' . $rating;
+
+ logger('gravatar: ' . $email . ' ' . $url);
+ return $url;
+}}
+
![' . $rr['name'] . '](' . $rr['micro'] . ' "' . $rr['name'] . ' [' . $rr['url'] . ']")
' . "\r\n";
+ }
+ $o .= '